The causative agent of botulism causes severe food poisoning. Specify the most characteristic morphological feature of botulism causative agent:

Answer options

1. Gram-positive bacillus with terminal spore
2. Thin mobile bacillus with central spore
3. Gram-positive bacillus with subtermi- nal spore
4. Thick gram-positive bacillus without spores and flagella
5. Thick gram-positive non-spore-forming bacillus